粉煤灰改良铁尾矿膏体充填材料试验研究

海龙,程同俊,徐博,赵鑫

Experimental Study on the Paste Filling Material of Iron Tailings Improved by Fly Ash

Long HAI,Tongjun CHENG,Bo XU,Xin ZHAO

表3 不同粉煤灰掺量下试样参数

Table 3 Parameters of specimens with different fly ash content

组别 坍落度/mm 无侧限抗压强度/MPa 孔隙率/% 吸水率/% 3 d 7 d 14 d 28 d 3 d 28 d T1 180.2 0.149 0.231 0.455 0.841 11.17 9.71 17.32 T2 199.6 0.174 0.237 0.440 0.949 11.07 9.32 19.12 T3 216.8 0.156 0.282 0.464 1.072 10.49 8.74 19.72 T4 225.3 0.184 0.265 0.498 1.225 10.13 8.09 21.49 T5 232.1 0.199 0.294 0.551 1.359 9.26 7.12 23.89 T6 237.5 0.205 0.302 0.532 1.313 9.21 7.23 27.12 T7 240.2 0.201 0.302 0.519 1.298 9.41 7.32 31.43